X0306 4 2015-03-24 0001030749 GULFMARK OFFSHORE INC GLF 0001488598 Darling David E 842 W. SAM HOUSTON PARKWAY N. STE 400 HOUSTON TX 77024 1 SVP - CHRO Common Stock 2015-03-24 4 A 0 15449 0 A 26021 D Common Stock 2015-03-24 4 F 0 1909 13.265 D 24112 D Non-Qualified Stock Option 13.265 2015-03-24 4 A 0 14442 0 A 2022-03-24 Common Stock 14442 24112 D Restricted stock vesting 1/3 on 12 months, 1/3 on 24 months and 1/3 on 36 months from effective date of grant, March 24, 2015. Transaction was a withholding of portion of vested restricted share units to satisfy the reporting person's tax withholding obligations upon vesting, pursuant to the award agreement and associated equity incentive plan under which the award was granted. The stock options were granted on March 24, 2015, as part of the Issuer's annual equity grant to executive officers. The stock options are scheduled to vest annually at a rate of one-third on each anniversary of the grant date, commencing on the first anniversary of the grant date. /s/ David E. Darling 2015-03-26